Unread portion of the kernel message buffer: Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex process lock (process lock) r = 0 (0xfffffe018c366700) locked @ /usr/src/sys/kern/kern_exit.c:940 exclusive sleep mutex process lock (process lock) r = 0 (0xfffffe018c860160) locked @ /usr/src/sys/kern/kern_exit.c:1059 stack backtrace: #0 0xffffffff80bbe155 at witness_debugger+0x65 #1 0xffffffff80bbf299 at witness_warn+0x3e9 #2 0xffffffff81048298 at trap_pfault+0x88 #3 0xffffffff8101b4a8 at calltrap+0x8 #4 0xffffffff80afe3af at proc_reap+0xbf #5 0xffffffff80afeda3 at proc_to_reap+0x3d3 #6 0xffffffff80afdf16 at kern_wait6+0x1b6 #7 0xffffffff80afdb1d at sys_wait4+0x7d #8 0xffffffff81048bb9 at amd64_syscall+0x139 #9 0xffffffff8101bdbb at fast_syscall_common+0xf8 Fatal trap 12: page fault while in kernel mode cpuid = 2; apic id = 02 fault virtual address = 0x7 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80b4d569 stack pointer = 0x28:0xfffffe018a3d7ad0 frame pointer = 0x28:0xfffffe018a3d7ad0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 1102 (signalfd-test) rdi: fffff8000cacf540 rsi: fffff8000cacf540 rdx: ffffffffffffffff rcx: fffffe018c3665d8 r8: 0000000000000000 r9: ffffffff811f81bd rax: fffffe018c366788 rbx: fffffe018c860038 rbp: fffffe018a3d7ad0 r10: 0000000000000000 r11: 000000000000000c r12: fffffe018c366718 r13: fffffe018a3d7dd4 r14: fffffe018c860178 r15: fffffe018c3665d8 trap number = 12 panic: page fault cpuid = 2 time = 1687898995 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe018a3d7890 vpanic() at vpanic+0x150/frame 0xfffffe018a3d78e0 panic() at panic+0x43/frame 0xfffffe018a3d7940 trap_fatal() at trap_fatal+0x40a/frame 0xfffffe018a3d79a0 trap_pfault() at trap_pfault+0xae/frame 0xfffffe018a3d7a00 calltrap() at calltrap+0x8/frame 0xfffffe018a3d7a00 --- trap 0xc, rip = 0xffffffff80b4d569, rsp = 0xfffffe018a3d7ad0, rbp = 0xfffffe018a3d7ad0 --- sigqueue_take() at sigqueue_take+0x29/frame 0xfffffe018a3d7ad0 proc_reap() at proc_reap+0xbf/frame 0xfffffe018a3d7b10 proc_to_reap() at proc_to_reap+0x3d3/frame 0xfffffe018a3d7b60 kern_wait6() at kern_wait6+0x1b6/frame 0xfffffe018a3d7c00 sys_wait4() at sys_wait4+0x7d/frame 0xfffffe018a3d7e00 amd64_syscall() at amd64_syscall+0x139/frame 0xfffffe018a3d7f30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe018a3d7f30 --- syscall (7, FreeBSD ELF64, wait4), rip = 0x8234e42fa, rsp = 0x8207fbd38, rbp = 0x8207fbd70 --- KDB: enter: panic __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:59 59 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct pcpu, (kgdb) #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:59 #1 doadump (textdump=textdump@entry=0) at /usr/src/sys/kern/kern_shutdown.c:407 #2 0xffffffff804a345a in db_dump (dummy=, dummy2=, dummy3=, dummy4=) at /usr/src/sys/ddb/db_command.c:593 #3 0xffffffff804a325d in db_command (last_cmdp=, cmd_table=, dopager=true) at /usr/src/sys/ddb/db_command.c:506 #4 0xffffffff804a2f1d in db_command_loop () at /usr/src/sys/ddb/db_command.c:553 #5 0xffffffff804a65f6 in db_trap (type=, code=) at /usr/src/sys/ddb/db_main.c:270 #6 0xffffffff80b9a893 in kdb_trap (type=type@entry=3, code=code@entry=0, tf=tf@entry=0xfffffe018a3d77d0) at /usr/src/sys/kern/subr_kdb.c:784 #7 0xffffffff81047d7d in trap (frame=0xfffffe018a3d77d0) at /usr/src/sys/amd64/amd64/trap.c:610 #8 #9 kdb_enter (why=, msg=) at /usr/src/sys/kern/subr_kdb.c:550 #10 0xffffffff80b4bda1 in vpanic (fmt=0xffffffff811842e0 "%s", ap=ap@entry=0xfffffe018a3d7920) at /usr/src/sys/kern/kern_shutdown.c:960 #11 0xffffffff80b4bb63 in panic ( fmt=0xffffffff8194c0a0 "V\375\023\201\377\377\377\377") at /usr/src/sys/kern/kern_shutdown.c:896 #12 0xffffffff8104820a in trap_fatal (frame=0xfffffe018a3d7a10, eva=7) at /usr/src/sys/amd64/amd64/trap.c:954 #13 0xffffffff810482be in trap_pfault (frame=0xfffffe018a3d7a10, usermode=false, signo=, ucode=) at /usr/src/sys/amd64/amd64/trap.c:762 #14 #15 0xffffffff80b4d569 in sigqueue_take (ksi=0xfffff8000cacf540) at /usr/src/sys/kern/kern_sig.c:449 #16 0xffffffff80afe3af in proc_reap (td=td@entry=0xfffffe018c367000, p=p@entry=0xfffffe018c860038, status=status@entry=0xfffffe018a3d7dd4, options=) at /usr/src/sys/kern/kern_exit.c:941 #17 0xffffffff80afeda3 in proc_to_reap (td=td@entry=0xfffffe018c367000, p=p@entry=0xfffffe018c860038, idtype=idtype@entry=P_PID, id=id@entry=1103, status=status@entry=0xfffffe018a3d7dd4, options=options@entry=48, wrusage=0x0, siginfo=0x0, check_only=0) at /usr/src/sys/kern/kern_exit.c:1197 #18 0xffffffff80afdf16 in kern_wait6 (td=td@entry=0xfffffe018c367000, idtype=P_PID, id=1103, status=status@entry=0xfffffe018a3d7dd4, options=48, wrusage=0x0, siginfo=0x0) at /usr/src/sys/kern/kern_exit.c:1326 #19 0xffffffff80afdb1d in kern_wait (status=0xfffffe018a3d7dd4, options=0, rusage=0x0, td=, pid=) at /usr/src/sys/kern/kern_exit.c:1238 #20 sys_wait4 (td=0xfffffe018c367000, uap=0xfffffe018c367400) at /usr/src/sys/kern/kern_exit.c:864 #21 0xffffffff81048bb9 in syscallenter (td=) at /usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:190 #22 amd64_syscall (td=0xfffffe018c367000, traced=0) at /usr/src/sys/amd64/amd64/trap.c:1199 #23 #24 0x00000008234e42fa in ?? () Backtrace stopped: Cannot access memory at address 0x8207fbd38